How to get a top row index when the Gridview in scrollbar

[Sakthivel]

I am using Radgridview with scrollbar.I want to get a top row index while after scrolling the gridview.

Another thing i want to get a particular cell position that is LocationX and LocationY from Radgridview.

Regards,
Sakthy

[Jack]

Hello Sakthivel,

Thank you for contacting us.

You can get the top visible row index by accessing the vertical scroll position in grid. Refer to the code snippet below:

GridVScrollBar vscrollBar = (GridVScrollBar)((GridTableElement)this.radGridView1.GridElement).Children[3];
int vindex = vscrollBar.Value;

You can get the cell location by using the RowIndex and ColumnIndex properties of the GridCellElement. If you need the cell coordinates, use the ControlBoundingRectangle property.

Do not hesitate to write us, if you need further assistance.

All the best,
Jack
the Telerik team

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[Ken]

Has the way to do this changed for later releases?  I don't seem to have GridVScrollBar defined - I'm on 2011 Q2 release.
Thanks
Ken

[Jack]

Hi Ken,

Yes, we have changed a lot since 2008. Now RadGridView scrolls smoothly, not row by row. That is why this approach will not work anymore. You can do the job by using the Index property of GridViewRowInfo:

public int GetFirstVisibleRowIndex(RadGridView grid)
{
    foreach (GridRowElement row in this.radGridView1.TableElement.VisualRows)
    {
        if (row.RowInfo is GridViewDataRowInfo || row.RowInfo is GridViewGroupRowInfo)
        {
            return row.RowInfo.Index;
        }
    }
    return -1;
}

If you have further questions, I will be glad to help.
 
Best wishes,
Jack
the Telerik team

[Erik]

Has this changed much of late? 

[Dess | Tech Support Engineer, Principal]

Hi, Erik,

The above approach is still valid for returning the row index of the first visible row in RadGridView.